There's no regret. You can't regret. I mean I've felt regret but I've also refused to allow regret to sow a seed and live in me because I don't believe it. You feel it it's like guilt it's like jealousy it's like all those horrible things. You've just got to snip them and get them out because they're no good.
To be stupid selfish and have good health are three requirements for happiness though if stupidity is lacking all is lost.